Copper (II) chloride, likewise known as cupric chloride, is a not natural salt provided as catalysts in chemical synthesis and is likewise used in the manufacturing of pyrotechniques because that its blue/green colors.
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Formula and structure: Copper (II) chloride chemical formula is CuCl2 and also the molar mass is 134.45 g mol-1. The dehydrated kind has a molecular mass of 170.48 g mol-1. The framework of the anhydrous salt is formed by one cation Cu2+ and two anion Cl-. The structure is a distorted octahedron v a copper cation tied to 6 chloride anions. In this dehydrated form, it is formed by a Cu2+ centered atom, surrounded by 2 water molecules and also two chlorine anions Cl-. Its chemical structure deserve to be created as below, in the usual representations used for organic molecules.
Occurrence: Copper (II) chloride, in that is anhydrous or dehydrate forms, is uncovered in part rare minerals together tolbachite and eriochalcite. This minerals are mostly uncovered in fumaroles.
Preparation: Copper chloride is all set from the reaction of metallic copper with chlorine:
Cu + Cl2 + 2 H2O → CuCl2
Copper (II) chloride can likewise be obtained by the reaction the copper (II) hydroxide or copper (II) carbonate through hydrochloric acid:
Cu(OH)2 + 2HCl → CuCl2 + 2 H2O
Physical properties: Copper (II) chloride is a blue-green solid as soon as dehydrated and also a yellow-brown solid as soon as anhydrous. Copper (II) chloride thickness are 3.38 and 2.51 g mL-1for the anhydrous and also dehydrate forms. The melting point of the anhydrous salt is 498 °C and above 993 ºC the anhydrous salt decomposes. Copper (II) chloride is dissolve in water, ethanol, methanol and also acetone.
Chemical properties: Copper (II) chloride can suffer a diverse variety of reaction, which make it functional to use in various application in chemical sector or chemistry synthesis:
It have the right to suffer a oxidization reaction in the presence of a reductant. The created compounds include metallic copper or cuprous salt:
2 CuCl2 + SO2 + 2 H2O → 2 CuCl + 2 HCl + H 2SO4
With bases, copper (II) chloride deserve to suffer a instead of to kind copper (II) hydroxide:
CuCl2 + 2 NaOH → Cu(OH)2 + 2 NaCl
Uses: Copper (II) chloride can be offered as a catalyst together with other chloride salts together the palladium (II) chloride. One of the uses is in the production of ethylene to acetaldehyde
C2H4 + PdCl2 + H2O → CH 3CHO + Pd + 2 HCl
Due come its blue/green color, it is provided in the to produce of pyrotechnics.
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Health results / safety and security hazards: Copper (II) chloride is toxic in high concentrations. It have the right to react v oxidizing agents. The link is not flammable.